Download Substitution - Baldwin School

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

page
1
page
2
page
3
page
4
Document related concepts
no text concepts found
Transcript 
Name________________________________________Date______________8th Grade
Aim
How do we solve systems of equations using substitution?
Warm Up
Solve each system of equations
using substitution. Check.
1.
Substitution
Step 1: Solve any equation for any unknown value.
Step 2: Substitute Step 1 into the other equation.
y + 3x = 4
Step 3: Substitute Step 2’s solution into Step 1.
y = -8
Step 4: Check your answer.
2.
2y – 4x = -2
x= 4
Group Work
Solve each system of equations
using substitution. Check.
1.
Substitution
Step 1: Solve any equation for any unknown value.
Step 2: Substitute Step 1 into the other equation.
y=x
Step 3: Substitute Step 2’s solution into Step 1.
x + y = 12
Step 4: Check your answer.
2.
x + 5y = 0
x = 10
3.
x + y = 11
3x – 2y = 13
4.
3x – y = 13
2x + 3y = 16
Homework
Substitution
Step 1: Solve any equation for any unknown value.
Step 2: Substitute Step 1 into the other equation.
Step 3: Substitute Step 2’s solution into Step 1.
Step 4: Check your answer.
Solve the system of equations using substitution. Check.
y+x=0
x–y=8
Related documents